<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head lang="en">
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <link rel="stylesheet" th:href="@{css/app.css}"/>
</head>
<body>
<h1 class="app_title" th:text="${message}">Hello World</h1>
<p>图片：<img th:src="@{image/avatar.jpg}"/></p>
</body>
</html>